Document No. Title Doc: CED 9(7357) Guidelines for Design ... - Bis

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FORMAT FOR SENDING COMMENTS ON BIS DOCUMENTS (Please use A4 size sheet of paper only and type within fields indicated. Comments on each clause/subclause/table/fig etc. be started on a fresh box. Information in column 3 should include reasons for the comments and suggestions for modified working of the clauses when the existing text is found not acceptable. Adherence to this format facilitates Secretariat’s work) {Please e- mail your comments to ced@bis.org.in or madhurima@bis.org.in or fax to 011 23235529} DOC. NO. & TITLE: CED 9(7357) GUIDELINES FOR DESIGN, INSTALLATION AND TESTING OF TIMBER SOLAR SEASONING KILN LAST DATE OF COMMENTS: 30 June 2007 NAME OF THE COMMENTATOR/ORGANIZATION: Sl. No. (1) Clause/Subclause/Para No. (2) Comments/suggestions (3)
BUREAU OF INDIAN STANDARDS Doc No. : CED 9(7357) DRAFT FOR COMMENTS ONLY (Not to be reproduced without the permission of BIS or used as an Indian Standard) Draft Indian Standard GUIDELINES FOR DESIGN, INSTALLATION AND TESTING OF TIMBER SOLAR SEASONING KILN Timber and Timber Stores Last Date for receipt of Sectional Committee CED 9 Comments is 30 June 2007 FOREWORD (Formal clauses will be added later on.) Air seasoning and kiln seasoning are the traditional methods of seasoning timber. A large number of timber seasoning kilns have been installed in the country during the last five decades or so and many more are expected to be installed in the coming years with the rapidly increasing industrialization and the growing awareness of quality control in seasoned timber for various jobs. In the early years, kiln equipments manufacturing industry has got established on the basis of research work carried out at the Forest Research Institute, Dehradun. The design of a timber-seasoning kiln has a direct bearing on the quality of seasoned timber produced with regards to seasoning degrade, uniformity of moisture content and freedom from stresses after drying. The kiln to be installed have varied widely in design features such as constructional material, nature of air circulation, mode of heating and humidification, venting system, baffling and several other minor but important details that affect performance. For kiln seasoning, following three different designs of timber seasoning kilns are indigenously available and are most extensively used by timber industries in India at present: i) Steam heated over-head internal fans reversible air circulation kilns. ii) Dehumidification kilns. iii) Solar Heated Kiln. IS 7315:1974, ‘Guidelines for design, installation and testing of timber seasoning kiln (compartment type with cross forced air circulation)’ has been published for the use of timber based industries. For such kilns the mode of heating is indirect in which heating by steam, furnace flue gases or electricity is generally adopted for heating the drying air. Conventional seasoning kiln using steam heat is appropriate only to large or medium scale operations, being prohibitively
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Document No. Title Doc: CED 9(7357) Guidelines for Design ... - Bis

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